Index - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A-Z
JACK - Any of a range of hardware devices on which the permanent wiring of telecommunications circuits or apparatus is terminated to provide a physical access point by the insertion of a plug.
JITTER - Short term instability of the amplitude and/or phase of a signal. The latter condition is commonly called PHASE JITTER.
JUMP SCROLLING - Characteristic of a terminal with vertical motions of a whole line of characters at a time in discrete steps of one line, much as a teleprinter terminal might do. Contrast with " smooth scrolling " as done by graphics terminals.